{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-binds #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.Lightsail.GetInstanceState
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns the state of a specific instance. Works on one instance at a
-- time.
module Amazonka.Lightsail.GetInstanceState
  ( -- * Creating a Request
    GetInstanceState (..),
    newGetInstanceState,

    -- * Request Lenses
    getInstanceState_instanceName,

    -- * Destructuring the Response
    GetInstanceStateResponse (..),
    newGetInstanceStateResponse,

    -- * Response Lenses
    getInstanceStateResponse_state,
    getInstanceStateResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.Lightsail.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newGetInstanceState' smart constructor.
data GetInstanceState = GetInstanceState'
  { -- | The name of the instance to get state information about.
    instanceName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetInstanceState' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'instanceName', 'getInstanceState_instanceName' - The name of the instance to get state information about.
newGetInstanceState ::
  -- | 'instanceName'
  Prelude.Text ->
  GetInstanceState
newGetInstanceState pInstanceName_ =
  GetInstanceState' {instanceName = pInstanceName_}

-- | The name of the instance to get state information about.
getInstanceState_instanceName :: Lens.Lens' GetInstanceState Prelude.Text
getInstanceState_instanceName = Lens.lens (\GetInstanceState' {instanceName} -> instanceName) (\s@GetInstanceState' {} a -> s {instanceName = a} :: GetInstanceState)

instance Core.AWSRequest GetInstanceState where
  type
    AWSResponse GetInstanceState =
      GetInstanceStateResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          GetInstanceStateResponse'
            Prelude.<$> (x Data..?> "state")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable GetInstanceState where
  hashWithSalt _salt GetInstanceState' {..} =
    _salt `Prelude.hashWithSalt` instanceName

instance Prelude.NFData GetInstanceState where
  rnf GetInstanceState' {..} = Prelude.rnf instanceName

instance Data.ToHeaders GetInstanceState where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "Lightsail_20161128.GetInstanceState" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON GetInstanceState where
  toJSON GetInstanceState' {..} =
    Data.object
      ( Prelude.catMaybes
          [Prelude.Just ("instanceName" Data..= instanceName)]
      )

instance Data.ToPath GetInstanceState where
  toPath = Prelude.const "/"

instance Data.ToQuery GetInstanceState where
  toQuery = Prelude.const Prelude.mempty

-- | /See:/ 'newGetInstanceStateResponse' smart constructor.
data GetInstanceStateResponse = GetInstanceStateResponse'
  { -- | The state of the instance.
    state :: Prelude.Maybe InstanceState,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetInstanceStateResponse' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'state', 'getInstanceStateResponse_state' - The state of the instance.
--
-- 'httpStatus', 'getInstanceStateResponse_httpStatus' - The response's http status code.
newGetInstanceStateResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetInstanceStateResponse
newGetInstanceStateResponse pHttpStatus_ =
  GetInstanceStateResponse'
    { state = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The state of the instance.
getInstanceStateResponse_state :: Lens.Lens' GetInstanceStateResponse (Prelude.Maybe InstanceState)
getInstanceStateResponse_state = Lens.lens (\GetInstanceStateResponse' {state} -> state) (\s@GetInstanceStateResponse' {} a -> s {state = a} :: GetInstanceStateResponse)

-- | The response's http status code.
getInstanceStateResponse_httpStatus :: Lens.Lens' GetInstanceStateResponse Prelude.Int
getInstanceStateResponse_httpStatus = Lens.lens (\GetInstanceStateResponse' {httpStatus} -> httpStatus) (\s@GetInstanceStateResponse' {} a -> s {httpStatus = a} :: GetInstanceStateResponse)

instance Prelude.NFData GetInstanceStateResponse where
  rnf GetInstanceStateResponse' {..} =
    Prelude.rnf state
      `Prelude.seq` Prelude.rnf httpStatus